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Enterprex Model 100M Desktop Electronic Calculator

Enterprex Model 100M Desktop Electronic Calculator

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Description
This compact desktop electronic calculator has an ivory-colored plastic case, a brown plastic keyboard, twenty-two square plastic keys, and three rectangular plastic bars. In addition to nine digit keys, a zero bar and a decimal point key, there are bars for addition/sum and subtraction/total, keys for multiplication and division, and keys for exchange and clear/clear entry. To the left of the digit keys are six memory keys, a percentage key, and a Δ% key. Behind the keyboard are three switches and a ten-digit vacuum fluorescent display. A mark in front of the keyboard reads: ENTERPREX 100M.
The back of the calculator has a compartment for two large batteries. Below this is an indentation for a sticker, but the sticker has come loose. It reads in part: 10-DIGIT DESK-TOP (/) ELECTRONIC CALCULATOR (/) POWER SOURCE: TWO "D" CELL (/) BATTERIES. DC 3VOLT. It also reads in part: SERIAL NO. 64597 (/) PN 943014 MADE IN TAIWAN.
References:
[Advertisement], Chicago Tribune, November 5, 1978, p. M7. Enterprex 100M advertised as on sale for $20.00.
[Advertisement], Los Angeles Times, February 24, 1979, p. C2. Enterprex 100M advertised as on sale for $29.95, with a list price of $40.00
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 70.
BE CALC Vintage Electronic Calculators website (now www.calcuseum.com). This shows an example of the calculator, with a sticker indicating that it was made in Hong Kong.
Location
Currently not on view
Object Name
electronic calculator
date made
ca 1978
distributor
Enterprex
place made
Taiwan
Physical Description
plastic (case; keys; display cover material)
metal (circuitry; switches material)
glass (tube material)
Measurements
overall: 1 3/4 in x 6 1/2 in x 6 3/4 in; 4.445 cm x 16.51 cm x 17.145 cm
ID Number
1986.0988.201
catalog number
1986.0988.201
accession number
1986.0988
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Desktop Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History
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